Add condition to run safety checks only for non-forked pull requests (#742)

Author: nvuillam

.github/workflows/build.yml

@@ -40,6 +40,7 @@ jobs:
           make check-codestyle
 
       - name: Run safety checks
+        if: github.repository == 'nvuillam/github-dependents-info' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork == false)
         env:
           SAFETY_API_KEY: ${{ secrets.SAFETY_API_KEY }}
         run: |